XR20M1170 Datasheet, PDF (43/60 Pages) Exar Corporation – I2C/SPI UART WITH 64-BYTE FIFO

REV. 1.0.0
XR20M1170
I2C/SPI UART WITH 64-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS - UART CLOCK
Unless otherwise noted: TA=-40^o to +85^oC, Vcc=1.62 - 3.63V
SYMBOL
PARAMETER
XTAL1
ECLK
T_ECLK
UART Crystal Oscillator
UART External Clock
External Clock Time Period
LIMITS
1.8V ± 10%
MIN
MAX
LIMITS
2.5V ± 10%
MIN
MAX
LIMITS
3.3V ± 10%
MIN
MAX
24
24
24
32
50
64
15
10
7
UNIT
MHz
MHz
ns
FIGURE 20. CLOCK TIMING
T_ECLK
External
Clock
VIHCK
VILCK
T_ECH
T_ECL
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